php数组相同key,PHP多维数组相同key的value值累加函数函数
function array_value_sum()
{
$res = array();
foreach (func_get_args() as $arr) {
foreach ($arr as $k => $v){
if (!isset($res[$k])){
$res[$k] = $v;
}else{
$res[$k] += $v;
}
}
}
return $res;
}
实例：
$arr1 = array(311=>1, 312=>2, 314=>2);
$arr2 = array(311=>2, 312=>2, 313=>5, 314=>9);
$arr3 = array(314=>10);
$newArr = array_value_sum($arr1, $arr2, $arr3);
print_r($newArr);
value函数什么意思输出：
Array ( [311] => 3 [312] => 4 [314] => 21 [313] => 5 )